AMSOIL 100:1 Pre-Mix 100% Synthetic 2-Stroke Outboard Oil

Performance-Engineered for Outboards

  • Protects two-stroke outboards at 100:1 mix ratios.
  • Prevents plug fouling and ring sticking.
  • Improves idling and throttle response.
  • Minimizes smoke and emissions.

Product Overview

AMSOIL Synthetic 2-Stroke Outboard Oil is engineered with low-temperature dispersants that reduce varnish and carbon deposits to help eliminate plug fouling and promote rapid throttle response in water-cooled outboard motors. Its environmentally friendly low-smoke, low-odor, low-toxicity properties produce fewer emissions at 100:1 mix ratios than other oils mixed at 50:1.

Smokeless Protection
AMSOIL Synthetic 2-Stroke Outboard Oil delivers superior lubricity and anti-wear protection at 100:1 mix ratios and burns clean to eliminate smoke and reduce emissions. It also inhibits rust and corrosion common to marine applications.

Superior Performance
AMSOIL Synthetic 2-Stroke Outboard Oil improves ignition, idling and throttle response in two-stroke engines by inhibiting deposit formation that causes plug fouling, ring sticking and exhaust port blockage.

  • Prevents plug fouling and ring sticking.
  • Improves idling and throttle response.
  • Minimizes smoke and emissions.
  • Maximizes torque and power.
  • Protects at lean mix ratios.
  • Inhibits rust and corrosion. 

APPLICATIONS
Use pre-mixed in two-stroke outboard motors, personal watercraft and jet boats that specify TC-W3. For maximum performance, mix with gasoline at 100:1 regardless of the mix ratio specified for the equipment. Richer mix ratios may be used if desired.

RATIOOILFUEL
50:12.6 oz.1 U.S. GALLON
80:18.0 oz.5 U.S. GALLONS
100:18.0 oz.6 U.S. GALLONS

WARRANTY SECURE®    
AMSOIL Synthetic 2-Stroke Outboard Oil is Warranty Secure, keeping your factory warranty intact. It is a high-performance replacement for manufacturer-branded oils and backed by the AMSOIL Limited Warranty. 

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Product information checked: September 2026. Product formulations, specifications, applications, availability and published claims can change.
For the latest official information, consult the AMSOIL Corproate Website.

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